PCI: keystone: Fix if-statement expression in ks_pcie_quirk()

This code accidentally uses && where || was intended.  It potentially
results in a NULL dereference.

Thus, fix the if-statement expression to use the correct condition.

Fixes: 86f271f ("PCI: keystone: Add workaround for Errata #i2037 (AM65x SR 1.0)")
Link: https://lore.kernel.org/linux-pci/[email protected]
Signed-off-by: Dan Carpenter <[email protected]>
[kwilczynski: commit log]
Signed-off-by: Krzysztof Wilczyński <[email protected]>
Reviewed-by: Manivannan Sadhasivam <[email protected]>
Reviewed-by: Siddharth Vadapalli <[email protected]>

Author: Dan Carpenter

drivers/pci/controller/dwc/pci-keystone.c

@@ -577,7 +577,7 @@ static void ks_pcie_quirk(struct pci_dev *dev)
 	 */
 	if (pci_match_id(am6_pci_devids, bridge)) {
 		bridge_dev = pci_get_host_bridge_device(dev);
-		if (!bridge_dev && !bridge_dev->parent)
+		if (!bridge_dev || !bridge_dev->parent)
 			return;
 
 		ks_pcie = dev_get_drvdata(bridge_dev->parent);